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Three Reasons For Hydrodynamic Analysis

[Posted on October 7th by Bill Stewart]

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There are many reasons for hydrodynamic analysis. Generally speaking, it helps to provide details about how the water is going to react. Whether you’re boating or going out with an offshore oil rig, you need to understand the behavior of the water as a way of preparing for everything that you could potentially encounter.

Supplies

Once you are on the water, you cannot simply obtain more supplies. What is on the boat or the rig is what you will have to use. This includes anchors, drop lines, and anything else. If you don’t know what the water is going to do in terms of temperature, salinity, depth, waves, and more, it could result in potentially disastrous accidents.

You may need chains of various lengths, risers that are capable of going into deeper waters, and more. It’s best to have these on the rig so you don’t have to cut a project short because of not having the right supplies.

Accidents

Many common accidents aboard a ship could have been avoided through hydrodynamic analysis. Everything from anchoring problems to men overboard accidents have occurred and that’s because everyone who was out on the ship were making assumptions about the behavior of the water instead of going with actual numbers.

Stewart Technology Associates can provide the analysis and even conduct a marine accident investigation. They have up-to-date technology that allows for numbers to be crunched and assumptions to be made. It also helps to establish worst-case scenarios in order to be prepared.

Prep

It’s important to be able to prep your team that’s going to be on the water. They need to know that swells could reach a certain height and that there may be instances where they need to use a different type of anchor or other piece of equipment as a result of the water that they are in. By having more information at your fingertips, you can go through various training modules and help your team to expect the unexpected.

When you know more about how waves work and everyone around you does, too, it works to your advantage. You cannot trust that everything will work itself out. There have been significant waves reported throughout the Pacific and Arctic Oceans. When your projects take you into unchartered waters, you cannot rely on what others have reported – the research has to be done on an as-needed basis.

The hydrodynamic analysis does not take long, so there’s no excuse for skipping it. You don’t even have to rely on your own team to do the analysis because a third party can do it and provide you with more advanced technology to ensure the numbers are accurate. Recommendations can come from the analysis as well, allowing you to get a second opinion on the supplies needed, the best way to avoid marine accidents, and more.

Why Anchor Analysis Is Critical

[Posted on October 7th by Bill Stewart]

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Any time that you are dealing with the water, you need to make sure you have the analysis to avoid disaster. Anchor analysis is critical so you know how you will be able to anchor while at sea without causing damage to the vessel and without drifting away. There are variables that need to be considered and failure to consider them all can lead to disaster.

It’s always a good idea to practice boat safety and that includes knowing the supplies that need to be kept on board. Having an anchor is only effective if it is capable of doing its job.

When you are anchoring, it’s important for anchor analysis to take place. With the right data, you can shop for the best anchor for your time at sea. It will also help you answer such questions as:

–           Weight of anchor

–           Length of chain

–           Material of anchor

–           Area of boat it should be cast from

There are variables that have to be taken into consideration. Knowing your course will help you to be more specific within the analysis. The depth of the water, the amount of waves that you will experience, and even the level of salinity are all things that should be known. While analysis will plan for the worst case scenario, you want to give the system an idea of what you are going to face while on a boat or other sea vessel.

Stewart Technology Associates uses advanced technology to provide analysis. This includes Orcaflex software that can do a significant amount of mapping and data analysis on your behalf. By automating a lot of the process, it’s possible to eliminate human error. After the initial analysis is made, the human analysts will be able to provide recommendations to help you obtain the necessary supplies and take the necessary precautions.

Various types of analysis can be obtained so you have all of the numbers and scenarios in front of you. This includes hydrodynamic analysis to help you understand the behavior of the water and how it can impact your project that is taking place on the water.

Your ultimate goal should always be to avoid accidents and this can be done by ensuring you know what’s going to happen when you go out on the water. Anchor analysis will ensure you have the needed equipment to anchor all the way down to the bottom of the ocean and remain there without drifting or experiencing any other complications.

The more numbers you crunch and the more data you input to the system, the easier it will be to find out what’s going on and prepare your vessel and your crew for their time at sea. Without it, you could end up with all sorts of problems – and these can be avoided.

How Seakeeping Analysis Is Critical In The World Of Offshore Drilling

[Posted on September 16th by Bill Stewart]

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Seakeeping analysis is of the utmost importance when you are involved in offshore drilling. Once you are out on the open waters, you cannot afford to have anything go wrong. You need to keep your vessel afloat and all of your employees safe. This means that you have to account for everything that could potentially affect your project – and analysis can be done before you leave dry land.

As you already know, ocean weather can be hard to predict. Part of seakeeping analysis is to look at the environment that the vessel has to operate in. This includes looking at wind speed, intensity of waves, and more.

When you know more about the environment, you can make better decisions in terms of what is needed. For example, you can decide on whether single point moorings are going to be effective based upon the size of your vessel, how it can respond to environmental conditions, and other details.

Your ship design needs to be taken into account. Some vessels are going to respond better to sea conditions than others. When there are functions of the ship that allow for you to deal with higher levels of salinity, colder temperatures, or even more intense waves, it can help you to achieve a higher level of performance.

The mission of your project may vary each time you go out onto the water. You may be drilling for oil or you may be surveying. Seakeeping analysis will need to be done each time you go out onto the water because the mission changes. The role of the ship is going to be considerably different if you are drilling because of all of the extra gear that will be in the water.

The analysis is going to tell you everything that you need to deal with vibrations, sea sickness, bow immersion, and everything else. There are limits that need to be established in terms of what your boat can handle.

You cannot take the chance of bringing a boat out onto the water without sufficient analysis. There are too many people in your crew and too many expensive pieces of equipment to go out onto the open waters without the analysis.

Ultimately, the success of your mission is dependent upon the analysis that is done beforehand. You can minimize risks and obtain more equipment prior to leaving land when you have the numbers in front of you. You are able to account for worst-case scenarios and prevent issues from occurring while you are out on the water. It can also help you to have a better return on investment in the end and get additional funding from investors when they see how well you prepare for any mission that you may be given. The analysis is important in any industry, though offshore drilling is a different beast entirely and therefore requires more sufficient data.

Why Riser Analysis Should Be Done By A Third Party

[Posted on September 9th by Bill Stewart]

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It is important to use riser analysis so you can ensure to build a durable rig, regardless of what the ocean conditions are. No project is the same as the last and if you want to avoid catastrophe, you need to look at the worst case scenarios. Analysis should be done by a third party for a variety of reasons.

Cost

You may be surprised by how affordable it is to receive riser analysis from a third party. You pay for the analysis you need, which means you may not need to employ a team of analysts that only provide you with the occasional seakeeping analysis as you request it.

When you combine more than one type of analysis in your order, it can also end up saving you more money, allowing you to get the quality results so that you can make more effective decisions within the products that you purchase as well as the overall layout of the risers and additional gear for the offshore oil drilling project.

Quality Analysis

It’s important to remember that the ocean in motion is going to have a dramatic effect on risers. When you are conducting riser analysis, you need the most detailed information available. If you lack any of the advanced technology, you may find that your analysts and engineers are guessing and that’s never a good thing.

When you can find a third party that uses state-of-the-art software to provide you with reports, you know that you can rely on the information that is being given to you. Finding someone who has experience with the offshore drilling industry can also make a big difference because the recommendations will be better geared to help you avoid marine accidents that may have been seen in the past.

You have a lot of expensive equipment going into the ocean and if you don’t have quality analysis, it could all be lost – and that could be the end of your project. Good analysis goes a long way to preventing this.

Accurate Details

There have been instances in the past where people have covered up information because they didn’t want to get a certain department in trouble. When you are out on an oil rig, you need to have the most accurate riser analysis in front of you. There should be no doubt as to whether the information is correct.

If you are getting the details from a third party, there is no reason to question motives – though you cannot say the same for your own team of engineers and analysts.

Whenever you are getting ready to set up a rig, it’s best to contact a professional analysis company. You can go over what you need and receive their recommendations to avoid any complications during planning or while you are out on the rig.

How Orcaflex Is Revolutionizing Data Analysis

[Posted on September 2nd 2014 by Bill Stewart]

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Orcaflex is capable of providing a significant amount of data analysis. The software is used in an array of industries and makes it possible to look at data in more effective ways to compensate for various environmental factors as well as to establish a worst-case scenario so that you can always expect the unexpected.

Some of the industries that the software can be used in includes offshore drilling, riser analysis, hose systems, renewable energy, defense, buoy systems and more. It would allow you to create wind turbine models, riser installation methods, look at the stability of a seabed, and run various test situations to ensure you have the correct setup and have thought about all possibilities within a project.

The features of Orcaflex are highly advanced, providing documentation and validation that would otherwise take analysts weeks to create. For example, ocean waves can have a dramatic impact on a project. When the waves become too high or too forceful, it can effect moorings, riser installation, and overall stability of a vessel out at seal.

Many offshore drilling sites will use Orcaflex in preparation of going out into the ocean. This is to ensure they have the correct materials, have all of the most accurate measurements, and have a design that will work given the environmental factors that they will be up against.

As a result of the technological advancements that the program has to offer, more industries are able to save money. They can utilize the software as opposed to hiring analysts. This helps to get more accurate information and get it faster.

Recommendations can be created from the data as well. This allows engineers and others to see the data from a new angle to determine what needs to be procured prior to starting a project. Salinity, temperature and an array of other factors can be included within the data sets that the software analyzes. This helps to create a better list of products to acquire, saving a company a considerable amount of money.

If you want to focus on your budget for a project, you need to make sure that your analysis is as detailed as possible. You cannot risk the integrity of your project with trial and error. Too many of the materials that you are using come at a high expense and if they are lost due to not accounting for a particular scenario, it could cause your project to fall apart – or be significantly delayed.

Orcaflex has proven itself to be a vital tool in the analysis of data when it comes to aquatic projects throughout many industries. The applications are considerable and the documentation and validation that can be provided helps you to know that your project is going to be more successful because the guesswork has been taken out of the equation once and for all.

The Need For Effective Mooring Analysis

[Posted on August 27th 2014 by Bill Stewart]

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Whether you are in the gas and oil industry and involved in establishing large rigs in the middle of the ocean or something much smaller, you need to know about mooring analysis, what it is, and why it is important. You can eliminate a variety of problems by having sufficient analysis in front of you.

Various maritime accidents happen every year because people go out onto the water without doing their homework first. They don’t know about what a mooring is and how to choose one that is going to handle the weight of their rig based upon water conditions.

Whether you are building a mooring or you are using one that is pre-existing, it’s important to get mooring analysis conducted so that you know about the environmental conditions. If you are not going to drop an anchor, using a mooring is one of the few ways that you can stay where you are in the water. If you do not have the necessary information available, you could make mistakes that could damage your boat, your rig, and risk the safety of you and everyone out on the water.

It is important to know about anchoring versus mooring to help you determine which one is needed. Particularly when you are in the gas and oil industry and you have flexible risers to deal with as well, you want to make sure you have what is needed to keep your rig in place.

There are various ways to get the mooring analysis that you require. You can choose to hire engineers and buy advanced software to do all of the research and analysis on your own. You can also choose a third party that can provide you with the analysis as well as their recommendations. The latter is often more affordable and can ensure that you have the details that are required without any kind of bias.

Particularly when you are out on the open seas where it’s hard for emergency personnel to get to you quickly in the event of an accident, you want to make sure you do all of the analysis properly so that you can avoid problems. Having a third party conduct the analysis is advantageous because you know that it is getting done properly and no one is trying to cover up the shortcomings of someone else – which has happened throughout history.

Your vessel has to stay where it is intended when you are on the water. If you cannot anchor due to depth or because of other conditions, using a mooring is your only other option. To avoid mistakes, accidents, or anything else, it is best to order a mooring analysis so you know what potential issues you are dealing with and can take the appropriate actions to prevent any problems from happening out on the water.

Understand Marine Accident Investigation

[Posted on August 20th 2014 by Bill Stewart]

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Marine Accident Investigation is the process in which marine accidents involving ships or any other marine vessels are systematically examined and investigated in order to find out the cause of the accident. Causes of marine accidents include explosion or collision and human error. The purpose of the investigation is to propose how such accidents can be avoided in the future.

If any accident occurs, the national administration assigns their expert investigators to carry out a Marine Accident Investigation. This is done by interviewing the witnesses, collecting evidence and information for analysis to find out the likely cause of the accident. The result of the accident investigation and proposal is proposed in the final report to the public in order to prevent any occurrence of such accident in the future.

International Maritime Organization requires that all states that have registered ships to thoroughly examine and report any severe accidents that take place in the waters. The voyage data recorder is nowadays fitted on ocean moving crafts in accordance to the international maritime organization requirement.

The voyage data recorder has contributed immensely to the understanding of the causes of marine accidents. It also has contributed to the advancements of marine safety measures. The recorded information has assisted accident investigators in rebuilding happenings of an accident, finding out its cause, and how it can be avoided.

How Stewart Technology Associates helps in investigating marine accidents

Stewart Technology Associates is an agency that offers software, professional testimony and engineering services to various clients in the United States. Detailed Marine Accident Investigation service is provided by Stewart Technology Associates.

It is undoubtedly sad when marine accidents occur. In many cases, the accidents usually bring about a huge amount of destruction. Due to this, an investigation needs to be done in order to answer many questions like: how did the accident happen? Who was responsible?

When an accident takes place, Stewart Technology Associates is always available to carry out the investigation to determine its cause. It does not matter where the accident happened; the president of Stewart Technology Associates and his professional team can be relied on to do a detailed investigation to determine the exact cause of the accident, the liable party and whether any improvements can be made to avoid the same accident from happening again in the future.

Mooring investigation assists in investigating causes of marine accidents

Mooring refers to any permanent construction to which a vessel may be held. Mooring Analysis is whereby a body or a group of bodies which are associated to the floor of the sea by catenary lines system are analyzed. The main function of these lines is to hold the body in a practical vicinity of a marked location.

Mooring systems help in thorough investigation about the causes of marine accidents. The investigation is essential as it is used to find out the cause of the accident and the responsible party. The correctness of mooring ropes, cargo hoses, steel wire, chain, and other factors are evaluated as part of collection of evidence.

How Hydrodynamic Analysis Can Fit Your Marine Needs

[Posted on August 13th 2014 by Bill Stewart]

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Whether you’re sailing a boat, buying coastal property, or planning coastal city development, a good understanding of marine conditions and variables is essential. At Stewart Technology Associates, we have the resources to perform a detailed hydrodynamic analysis of your local waterways, providing you with all the information you need for marine success.

Hydrodynamic analysis is the evaluation of marine environments, with a specific focus on water movement, salinity, and temperature. Analysts begin by researching the environment in question. The more detailed and comprehensive the data they gather, the more accurate their analysis will be.

Once the data is gathered, it is fed into a model, which evaluates all marine conditions and determines how they will interact with each other. Originally, analysts built physical models of the ecosystem, but with the advent of computers, most analysis companies now rely on digital models. The models identify trends in marine conditions and make predictions for future changes in the marine environment. At Stewart Technology, we use OrcaFlex, one of the best marine analysis programs on the market. The models are then made available for coastal developers, who can plan their future boating and construction endeavors around them.

How is hydrodynamic analysis useful?

We preform these analyses to help coastal communities avoid environmental and public health threats. Many of the most dangerous water-borne diseases and predators are sensitive to particular environmental conditions. For example, sea nettles, a type of dangerous jellyfish, can only live in moderately salty water that is twenty degrees Celsius or warmer. Our analysts can predict the likely locations of sea nettles, as well as the times of year when they are likely to appear, making it easier for swimmers to avoid these animals.

Our analysts can also help coastal developers measure and moderate their impact on the environment. Say runoff from a proposed road will change the heat and nutrient content of local waterways, increasing the number of algal blooms. By researching hydrodynamic conditions, we can determine the likely size of these blooms, as well as their likely damage to the local economy and environment. Developers can then decide whether the proposed road is worth the environmental cost.

Coastal developers who have effectively analyzed hydrodynamic conditions can plan more enduring construction projects. With have enough information, we can tell developers the full range of the region’s tides, as well as any other information that might affect coastal structures. This will help the developers to design structures that will survive for years, or even decades.

Finally, during a marine accident investigation, authorities must analyze hydrodynamic factors to determine the cause of the accident. Parties responsible for boating accidents often attribute the accidents to marine conditions rather than to their own negligence. We can assess the dangers of the site where the accident occurred and determine whether hydrodyanmic factors could plausibly have caused the accident.

Learning More about Flexible Risers

[Posted on August 6th 2014 by Bill Stewart]

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Flexible risers are pipes used to relocate materials from the floor of the sea to the production and drilling structures that are on top of the water surface or from the structures to the sea floor. There are various types of risers, including pull tube risers, attached risers, rise towers, steel catenary risers, flexible riser and drilling risers.  Whether they are helping as export, import or production vehicles, risers are the linking between the production and drilling facilities and the subsea field developments.

Just like flow lines and pipelines, risers carry production materials like gas lift, control fluids and injection fluids as well as hydrocarbons. The risers are generally insulated to tolerate the temperatures at the sea floor. They are also either flexible or rigid.

Types of Risers

Attached riser-they were the first risers to be developed. They are positioned on compliant towers, concrete gravity structures and fixed platforms.

Pull tube risers- they are used on fixed structures. They are flow lines or pipelines that are wound up at the facility’s center. A pull tube with a wide diameter than the riser is preinstalled on the facility. A rope that has a wire is attached to the pipeline on the floor of the sea. The line is pulled through the tube to the top.

Steel catenary risers– they are used to join the sea floor to the production structures above the sea floor. They also join two floating platforms of production.

Top tensioned risers-they are vertical risers that terminate directly below the facility. They can move crossways with the waves and winds. The rigid risers are fixed to the floor of the sea.

Rise towers- they are built to lift the risers to a considerable height to reach the surface of the water. They are designed for extremely deep water environment.

Drilling risers- they transfer mud to the top during activities that constitute drilling. They connect the wellbore temporarily to the surface to avoid fluids from drilling activities from leaking into the water. Flexible risers are connected to the vertical risers and to the structures above.

Flexible risers– they can accommodate various situations. They can withstand both horizontal and vertical movement. This makes them perfect for use with floating structures. The flexible pipe was initially used to join production apparatus onboard floating equipment to export and production risers. They are also found as a primary user. There are various shapes of such risers. Examples are like the steep S and Z, steep wave and lazy wave that use fastened buoyancy modules.

The risers are being seized by metallic systems in several current deep water expansions.  Flexible pipe has been an effective key for both shallow and deep water flow line and water riser systems in the whole world.  In such uses the flexible pipe section can be used along the whole riser length or it can be limited to short dynamic sections such as jumpers. A hydrodynamic analysis is used to solve difficult problems in the marine environment where the risers cannot.

Stewart technology associates has developed and enhanced the risers to answer the challenges posed by steel catenary risers. These improved methods are applied to flexible pipe allowing effective response of the flexible pipes under the most simple and difficult loading conditions.

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